3 source "lib/Kconfig.debug"
5 config PPC_DISABLE_WERROR
6 bool "Don't build arch/powerpc code with -Werror"
9 This option tells the compiler NOT to build the code under
10 arch/powerpc with the -Werror flag (which means warnings
11 are treated as errors).
13 Only enable this if you are hitting a build failure in the
14 arch/powerpc code caused by a warning, and you don't feel
19 depends on !PPC_DISABLE_WERROR
22 config PRINT_STACK_DEPTH
23 int "Stack depth to print" if DEBUG_KERNEL
26 This option allows you to set the stack depth that the kernel
27 prints in stack traces. This can be useful if your display is
28 too small and stack traces cause important information to
29 scroll off the screen.
32 bool "Hypervisor call instrumentation"
33 depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
35 Adds code to keep track of the number of hypervisor calls made and
36 the amount of time spent in hypervisor calls. Wall time spent in
37 each call is always calculated, and if available CPU cycles spent
38 are also calculated. A directory named hcall_inst is added at the
39 root of the debugfs filesystem. Within the hcall_inst directory
40 are files that contain CPU specific call statistics.
42 This option will add a small amount of overhead to all hypervisor
45 config PPC_EMULATED_STATS
46 bool "Emulated instructions tracking"
49 Adds code to keep track of the number of instructions that are
50 emulated by the in-kernel emulator. Counters for the various classes
51 of emulated instructions are available under
52 powerpc/emulated_instructions/ in the root of the debugfs file
53 system. Optionally (controlled by
54 powerpc/emulated_instructions/do_warn in debugfs), rate-limited
55 warnings can be printed to the console when instructions are
58 config CODE_PATCHING_SELFTEST
59 bool "Run self-tests of the code-patching code."
60 depends on DEBUG_KERNEL
63 config FTR_FIXUP_SELFTEST
64 bool "Run self-tests of the feature-fixup code."
65 depends on DEBUG_KERNEL
68 config MSI_BITMAP_SELFTEST
69 bool "Run self-tests of the MSI bitmap code."
70 depends on DEBUG_KERNEL
74 bool "Include xmon kernel debugger"
75 depends on DEBUG_KERNEL
77 Include in-kernel hooks for the xmon kernel monitor/debugger.
78 Unless you are intending to debug the kernel, say N here.
79 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
80 nothing will appear on the screen (xmon writes directly to the
82 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
83 very early during boot. 'xmon=on' will just enable the xmon
84 debugger hooks. 'xmon=off' will disable the debugger hooks
85 if CONFIG_XMON_DEFAULT is set.
86 xmon will print a backtrace on the very first invocation.
87 'xmon=nobt' will disable this autobacktrace.
90 bool "Enable xmon by default"
93 xmon is normally disabled unless booted with 'xmon=on'.
94 Use 'xmon=off' to disable xmon init during runtime.
96 config XMON_DISASSEMBLY
97 bool "Include disassembly support in xmon"
101 Include support for disassembling in xmon. You probably want
102 to say Y here, unless you're building for a memory-constrained
107 depends on KGDB || XMON
111 bool "Include BDI-2000 user context switcher"
112 depends on DEBUG_KERNEL && PPC32
114 Include in-kernel support for the Abatron BDI2000 debugger.
115 Unless you are intending to debug the kernel with one of these
116 machines, say N here.
119 bool "Support for early boot text console (BootX or OpenFirmware only)"
120 depends on PPC_OF && PPC_BOOK3S
122 Say Y here to see progress messages from the boot firmware in text
123 mode. Requires either BootX or Open Firmware.
125 config PPC_EARLY_DEBUG
126 bool "Early debugging (dangerous)"
128 Say Y to enable some early debugging facilities that may be available
129 for your processor/board combination. Those facilities are hacks
130 intended to debug problems early during boot, this should not be
131 enabled in a production kernel.
132 Note that enabling this will also cause the kernel default log level
133 to be pushed to max automatically very early during boot
136 prompt "Early debugging console"
137 depends on PPC_EARLY_DEBUG
139 Use the selected console for early debugging. Careful, if you
140 enable debugging for the wrong type of machine your kernel
143 config PPC_EARLY_DEBUG_LPAR
144 bool "LPAR HV Console"
145 depends on PPC_PSERIES
147 Select this to enable early debugging for a machine with a HVC
150 config PPC_EARLY_DEBUG_LPAR_HVSI
151 bool "LPAR HVSI Console"
152 depends on PPC_PSERIES
154 Select this to enable early debugging for a machine with a HVSI
155 console on a specified vterm.
157 config PPC_EARLY_DEBUG_G5
159 depends on PPC_PMAC64
161 Select this to enable early debugging for Apple G5 machines.
163 config PPC_EARLY_DEBUG_RTAS_PANEL
167 Select this to enable early debugging via the RTAS panel.
169 config PPC_EARLY_DEBUG_RTAS_CONSOLE
172 select UDBG_RTAS_CONSOLE
174 Select this to enable early debugging via the RTAS console.
176 config PPC_EARLY_DEBUG_MAPLE
177 bool "Maple real mode"
180 Select this to enable early debugging for Maple.
182 config PPC_EARLY_DEBUG_PAS_REALMODE
183 bool "PA Semi real mode"
184 depends on PPC_PASEMI
186 Select this to enable early debugging for PA Semi.
187 Output will be on UART0.
189 config PPC_EARLY_DEBUG_BEAT
190 bool "Beat HV Console"
191 depends on PPC_CELLEB
194 Select this to enable early debugging for Celleb with Beat.
196 config PPC_EARLY_DEBUG_44x
197 bool "Early serial debugging for IBM/AMCC 44x CPUs"
198 # PPC_EARLY_DEBUG on 440 leaves AS=1 mappings above the TLB high water
199 # mark, which doesn't work with current 440 KVM.
200 depends on 44x && !KVM
202 Select this to enable early debugging for IBM 44x chips via the
203 inbuilt serial port. If you enable this, ensure you set
204 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
206 config PPC_EARLY_DEBUG_40x
207 bool "Early serial debugging for IBM/AMCC 40x CPUs"
210 Select this to enable early debugging for IBM 40x chips via the
211 inbuilt serial port. This works on chips with a 16550 compatible
212 UART. Xilinx chips with uartlite cannot use this option.
214 config PPC_EARLY_DEBUG_CPM
215 bool "Early serial debugging for Freescale CPM-based serial ports"
216 depends on SERIAL_CPM
217 select PIN_TLB if PPC_8xx
219 Select this to enable early debugging for Freescale chips
220 using a CPM-based serial port. This assumes that the bootwrapper
221 has run, and set up the CPM in a particular way.
223 config PPC_EARLY_DEBUG_USBGECKO
224 bool "Early debugging through the USB Gecko adapter"
225 depends on GAMECUBE_COMMON
228 Select this to enable early debugging for Nintendo GameCube/Wii
229 consoles via an external USB Gecko adapter.
231 config PPC_EARLY_DEBUG_WSP
232 bool "Early debugging via WSP's internal UART"
234 select PPC_UDBG_16550
236 config PPC_EARLY_DEBUG_PS3GELIC
237 bool "Early debugging through the PS3 Ethernet port"
241 Select this to enable early debugging for the PlayStation3 via
242 UDP broadcasts sent out through the Ethernet port.
244 config PPC_EARLY_DEBUG_OPAL_RAW
245 bool "OPAL raw console"
248 Select this to enable early debugging for the PowerNV platform
249 using a "raw" console
251 config PPC_EARLY_DEBUG_OPAL_HVSI
252 bool "OPAL hvsi console"
255 Select this to enable early debugging for the PowerNV platform
256 using an "hvsi" console
258 config PPC_EARLY_DEBUG_MEMCONS
259 bool "In memory console"
261 Select this to enable early debugging using an in memory console.
262 This console provides input and output buffers stored within the
263 kernel BSS and should be safe to select on any system. A debugger
264 can then be used to read kernel output or send input to the console.
267 config PPC_MEMCONS_OUTPUT_SIZE
268 int "In memory console output buffer size"
269 depends on PPC_EARLY_DEBUG_MEMCONS
272 Selects the size of the output buffer (in bytes) of the in memory
275 config PPC_MEMCONS_INPUT_SIZE
276 int "In memory console input buffer size"
277 depends on PPC_EARLY_DEBUG_MEMCONS
280 Selects the size of the input buffer (in bytes) of the in memory
283 config PPC_EARLY_DEBUG_OPAL
285 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
288 config PPC_EARLY_DEBUG_HVSI_VTERMNO
289 hex "vterm number to use with early debug HVSI"
290 depends on PPC_EARLY_DEBUG_LPAR_HVSI
293 You probably want 0x30000000 for your first serial port and
294 0x30000001 for your second one
296 config PPC_EARLY_DEBUG_OPAL_VTERMNO
297 hex "vterm number to use with OPAL early debug"
298 depends on PPC_EARLY_DEBUG_OPAL
301 This correspond to which /dev/hvcN you want to use for early
304 On OPAL v1 (takeover) this should always be 0
305 On OPAL v2, this will be 0 for network console and 1 or 2 for
306 the machine built-in serial ports.
308 config PPC_EARLY_DEBUG_44x_PHYSLOW
309 hex "Low 32 bits of early debug UART physical address"
310 depends on PPC_EARLY_DEBUG_44x
313 You probably want 0x40000200 for ebony boards and
314 0x40000300 for taishan
316 config PPC_EARLY_DEBUG_44x_PHYSHIGH
317 hex "EPRN of early debug UART physical address"
318 depends on PPC_EARLY_DEBUG_44x
321 config PPC_EARLY_DEBUG_40x_PHYSADDR
322 hex "Early debug UART physical address"
323 depends on PPC_EARLY_DEBUG_40x
326 config PPC_EARLY_DEBUG_CPM_ADDR
327 hex "CPM UART early debug transmit descriptor address"
328 depends on PPC_EARLY_DEBUG_CPM
329 default "0xfa202008" if PPC_EP88XC
330 default "0xf0001ff8" if CPM2
331 default "0xff002008" if CPM1
333 This specifies the address of the transmit descriptor
334 used for early debug output. Because it is needed before
335 platform probing is done, all platforms selected must
336 share the same address.
340 prompt "Filter access to /dev/mem"
342 This option restricts access to /dev/mem. If this option is
343 disabled, you allow userspace access to all memory, including
344 kernel and userspace memory. Accidental memory access is likely
346 Memory access is required for experts who want to debug the kernel.
348 If you are unsure, say Y.
351 bool "Fault-injection capability for IOMMU"
352 depends on FAULT_INJECTION
354 Provide fault-injection capability for IOMMU. Each device can
355 be selectively enabled via the fail_iommu property.
357 If you are unsure, say N.